Composition for and process of treating type-writer platens.



ROBERT EENNEL WALKER, F AST-IEVILLE, NORTH CAROLINA, ASSIGNOR TO THE nnurnnn cone 1 non'rn cnnotrnn.

1,2 32% ttpeciflcation' of Letters Patent.

Ito Drawing.

' tion for and Process of Treating Typetypewriter Writer Platens, of which the following is a specification.

The present invention relates to a composition of matter which is rimaril adapted for use in connection wit the ru her rolls of typewriter platens or the e.

One object of the'invention is to overcome the disadvante of a slippery surface on laten rolls, to which end, one feature of t e invention consists in roviding a composition of matter that, w on applied, will form a coating over the surface of the platen and prevent undue slipping of the paper when used in the machine.

Another object of the invention is to provide a composition of matter which will improvethe condition of the platen, to which end, another feature of the invention consists'in providing a composition of matter which Wlll prevent the platen from being exposed to atmospheric conditions, and in this manner preserve the life of the rubber, the composition having also, a tendency to fill up the pores as well as the indentations in. the platen caused by the contact of the type.

strained or filtered into a glass. receptacle and then is added one ounce of oil of sassafras. To this is added one-half. ounce of coloring composed of one gallon alcohol and eight grains of fuchsin. When thoroughly Heretofore, considerable difficulty has been coloring matter-composed ofone gallon o 0F ASHEVILLE, NORTH CAROLINA, A CORPORATION OF 11-; writers iron nun rnocnss or TREATING TYPE-WRITER rnnrnivs.

mixed, the composition is exposed to the sunlight for two days when it may be bottled ready for use. The alcohol employed in the solution in addition to dissolving certain ingredients in the formirlais also of value when the composition is used to clean carbon ofi the rubber platen roll of the typewriter and as it evapora tes very quickly, it leaves the other in-- gredients evenly and sparingly distributed over the surface of the rubber producingthe desired results. The composition may be applied to the platen, of the typewriter in any effective manner, preferably b a, clean cloth. While the composition quic ly dries, better results may be obtained by rubbing the solution onto the platen. The applications may be repeated as often as is necessary to obtain the desired results.

While it is preferred to use the above ingredients and the particular manner of mixing the same, it is to be understood that other ingredients having the same descriptive properties may be employed without departing from the spirit of the present invention. Furthermore, it should be understood that while the invention is described asbeing especially adapted for use in con- ]Patented Apr. 3h, rare.

application tilled February 21', 1917. Serial No. 150,211.

nection with rubber rolls of typewriter platens, the same could be also used to advantage on other friction surfaces in like devices where it is desirable to overcome undue slipping of'the friction surface and the device contacting therewith. I claim 1. The process of treating friction surfaces to induce adhesion with objects con 'tacting therewith, which consists in coating the same with a tacky substance contain ng a non-oily evaporating medium.

2. The herein described composition of matter for treatingthe rubber rolls of typewriter platens consisting of two pounds of lump rosin, lon denatured alcohol, one ounce of oil of sassafras and a one-half ounce solution of alcohol and eight grains of fuchsin.

The foregoing specification signed at Asheville, N. (3., this 19th day of Febrw ary,1917.

Copies of tnta atent may 'Ibeohtained tor five cents each, by addressing the commoner of Tatentt,

. 659M011, 11 my 7 I one ounce of shellac, one galf'loo 

